CN108347311A - Send and receive method, access network equipment and the terminal device of feedback information - Google Patents

Abstract

The present application provides a method for sending feedback information, which can improve the transmission efficiency of the system. The method includes: the terminal device receives a transmission block TB sent by the access network device in a first transmission time interval TTI, the TB includes at least two coding blocks CB, and the at least two CBs include a first part CB and a second part CB ; If the terminal device receives the second part of CB sent by the access network device in the second TTI and does not receive the first part of CB, the terminal device sends the first feedback information and the second feedback information to the access network device, and the first feedback The information is used to feed back whether the terminal device correctly decodes the first part CB, and the second feedback information is used to feed back whether the terminal device correctly decodes the second part CB, wherein the second TTI is located after the first TTI in time sequence.

Description

Method for sending and receiving feedback information, access network device and terminal device

technical field

The present application relates to the field of information transmission, and more specifically, to a method for sending and receiving feedback information, an access network device and a terminal device.

Background technique

In the current long term evolution (Long Term Evolution, LTE) system, the feedback of the Hybrid Automatic Repeat Request (HARQ) and the retransmission of information are all for the transport block (Transport Block, TB). For example, when an access network device sends a TB to a terminal device, the terminal device will only feed back an acknowledgment (ACKnowledge , ACK) bits. And as long as one CB fails to be decoded successfully, the terminal device will also feed back a non-acknowledgement (NACKnowledge, NACK) bit for the entire TB to the access network device. Correspondingly, after receiving the NACK feedback sent by the terminal device, the access network device does not know which CBs the terminal device decoded successfully and failed to decode. Therefore, even if the terminal device decodes most of the CBs correctly , the access network device will still perform HARQ retransmission on all CBs in the entire TB subsequently.

Apparently, during the information transmission process, the terminal device provides feedback on the overall TB to the access network device, and at the same time, the access network device retransmits the TB, which will cause a significant drop in system transmission efficiency.

Contents of the invention

The present application provides a method for sending and receiving feedback information, which can improve the transmission efficiency of the system.

In a first aspect, the present application provides a method for sending feedback information, the method comprising: a terminal device receives a transmission block TB sent by an access network device in a first transmission time interval TTI, the TB includes at least two coding blocks CB, The at least two CBs include the first part CB and the second part CB; if the terminal device receives the second part CB sent by the access network device in the second TTI and does not receive the first part CB, the terminal device sends the access network The device sends first feedback information and second feedback information, the first feedback information is used to feed back whether the terminal device correctly decodes the first part CB, and the second feedback information is used to feed back whether the terminal device correctly decodes the second part CB, where the first The second TTI is located after the first TTI in time sequence.

Optionally, the duration of the second TTI is shorter than the duration of the first TTI, or the duration of the second TTI is equal to the duration of the first TTI. For example, the first TTI may be a normal TTI, and the second TTI may be a short TTI.

It can be understood that, in this embodiment of the present application, the access network device initially transmits a TB to the terminal device in the first TTI, and only retransmits part of the CBs in the TB in the second TTI. Therefore, the duration of the second TTI is shorter than the duration of the first TTI, which is beneficial to improving the transmission efficiency of the system.

In a possible implementation manner, the terminal device sends the first feedback information and the second feedback information to the access network device, including: the terminal device sends the first feedback information to the access network device in the third TTI, and sends the first feedback information to the access network device in the third TTI. Send the second feedback information to the access network device in four TTIs, where the third TTI and the fourth TTI are different TTIs in time.

In this embodiment, the terminal device only sends the first feedback information in the third TTI, but does not send the second feedback information. Similarly, in the fourth TTI, the terminal device only sends the second feedback information, but does not send the first feedback information.

In a possible implementation manner, the terminal device sends the first feedback information and the second feedback information to the access network device in the fifth TTI.

In a possible implementation manner, the first feedback information is specifically used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI, and the second feedback information is specifically used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI. The second part of the CB received by the second TTI.

In a possible implementation manner, the first feedback information includes a first part of feedback information and a second part of feedback information, and the first part of feedback information is used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI. The two-part feedback information is used to feed back whether the terminal device correctly decodes the second part of CB received in the first TTI; and, the second feedback information is specifically used to feedback whether the terminal device correctly decodes the second part of CB received in the second TTI. part CB.

In a possible implementation manner, the method further includes: if the terminal device does not receive the second part of CB after the first TTI, the terminal device sends third feedback information to the access network device, and the third feedback information is used to send The access network device feeds back whether the terminal device correctly decodes the TB received in the first TTI.

Optionally, in this embodiment, the terminal device does not receive the second part of CB after the first TTI, including that the terminal device does not receive the second part of CB within the receiving time window after the first TTI.

In a possible implementation manner, the method further includes: the terminal device sends fourth feedback information to the access network device in the third TTI, and the fourth feedback information is used to feed back to the access network device whether the terminal device correctly decodes The TB; and/or the terminal device sends fifth feedback information to the access network device in the fourth TTI, where the fifth feedback information is used to feed back to the access network device whether the terminal device decodes the TB correctly.

In a possible implementation manner, the method further includes: the terminal device sends sixth feedback information to the access network device in the fifth TTI, and the sixth feedback information is used to feed back to the access network device whether the terminal device correctly decodes The TB.

In a second aspect, the present application provides a method for receiving feedback information, the method comprising: an access network device sends a transmission block TB to a terminal device in a first transmission time interval TTI, the TB includes at least two coding blocks CB, the The at least two CBs include a first part of CB and a second part of CB; if the access network device sends the second part of CB to the terminal device in the second TTI and does not send the first part of CB, the access network device receiving first feedback information and second feedback information sent by the terminal device, the first feedback information is used to feed back whether the terminal device correctly decodes the first part CB, and the second feedback information is used to feed back whether the terminal device correctly decodes the second part CB, where the second TTI is located after the first TTI in time sequence.

In a possible implementation manner, the access network device receiving the first feedback information and the second feedback information sent by the terminal device includes: the access network device receives the first feedback information sent by the terminal device in a third TTI, and The second feedback information sent by the terminal device is received in the fourth TTI, where the third TTI and the fourth TTI are different TTIs in time.

In a possible implementation manner, the access network device receiving the first feedback information and the second feedback information sent by the terminal device includes: the access network device receiving the first feedback information and the second feedback information sent by the terminal device in the fifth TTI 2. Feedback information.

In a possible implementation manner, the first feedback information is specifically used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI, and the second feedback information is specifically used to feed back whether the terminal device correctly decodes the first part of the CB received in the first TTI. The second part of CB received in the second TTI.

In a possible implementation manner, the first feedback information includes a first part of feedback information and a second part of feedback information, and the first part of feedback information is used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI. The two-part feedback information is used to feed back whether the terminal device correctly decodes the second part of CB received in the first TTI; and, the second feedback information is specifically used to feedback whether the terminal device correctly decodes the second part of CB received in the second TTI. part CB.

In a possible implementation manner, the method further includes: the access network device receiving third feedback information sent by the terminal device, where the third feedback information is that the terminal device has not received the first TTI sent by the access network device after the first TTI. After the second part of the CB is sent to the access network device, the third feedback information is used to feed back whether the terminal device correctly decodes the TB received in the first TTI.

In a possible implementation manner, the method further includes: the access network device receives fourth feedback information sent by the terminal device in the third TTI, where the fourth feedback information is used to feed back whether the terminal device correctly decodes the TB; and /or the access network device receives fifth feedback information sent by the terminal device in the fourth TTI, where the fifth feedback information is used to feed back whether the terminal device correctly decodes the TB.

In a possible implementation manner, the method further includes: the access network device receives sixth feedback information sent by the terminal device in the fifth TTI, where the sixth feedback information is used to feed back whether the terminal device correctly decodes the TB.

In the third aspect, the embodiment of the present application provides a method for sending feedback information, the method includes: the terminal device receives the transmission block TB sent by the access network device in the first transmission time interval TTI, and the TB includes at least two coding blocks CB, the at least two CBs include the first part of CB and the second part of CB; if the terminal device receives the second part of CB sent by the access network device in the second TTI and does not receive the first part of CB, the terminal device in the second TTI Send the first feedback information to the access network device in three TTIs, the first feedback information is used to feedback whether the terminal device correctly decodes the first part CB received in the first TTI and the second part received in the second TTI CB, wherein the second TTI is located within a receiving time window after the first TTI, and the receiving time window is used by the terminal device to determine a maximum time period for waiting for the access network device to send the second part of the CB after the first TTI.

In a possible implementation manner, the method further includes: if the terminal device does not receive the second part of CB within the receiving time window, the terminal device sends the second feedback information to the access network device in the fourth TTI, and the second The feedback information is used to feed back to the access network device whether the terminal device correctly decodes the TB received in the first TTI, where the fourth TTI is the same as the third TTI, or the fourth TTI is located before the third TTI in time sequence .

In a possible implementation manner, the method further includes: if the terminal device receives the second part of CB in the fifth TTI outside the receiving time window, the terminal device sends the third part of CB to the access network device in the sixth TTI Feedback information, the third feedback information is used to feed back to the access network device whether the terminal device correctly decodes the TB, and/or the second part of CB received in the fifth TTI.

It should be noted that, generally, the sixth TTI is located after the third TTI in time sequence. However, if the retransmission of the second part of CB by the access network device in the second TTI takes much less than the length of one TTI, in this case, the time for decoding processing and feedback of the second part of CB can be advanced . At this time, the sixth TTI is not strictly limited in time sequence to be after the third TTI.

In a fourth aspect, the present application provides a method for receiving feedback information, the method comprising: an access network device sends a transmission block TB to a terminal device in a first transmission time interval TTI, the TB includes at least two coding blocks CB, the At least two CBs include the first part of CB and the second part of CB; if the access network device sends the second part of CB to the terminal device in the second TTI and does not send the first part of CB, the access network device receives in the third TTI The first feedback information sent by the terminal device, where the first feedback information is used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI and the second part of CB received in the second TTI, where , the second TTI is located within the receiving time window after the first TTI, and the receiving time window is used for the terminal device to determine the maximum duration for waiting for the access network device to send the second part of CB after the first TTI.

In a possible implementation, the method further includes: if the access network device does not send the second part of CB to the terminal device within the receiving time window, the access network device receives the second feedback sent by the terminal device in the fourth TTI The second feedback information is used to feed back whether the terminal device correctly decodes the TB received in the first TTI, where the fourth TTI is the same as the third TTI, or the fourth TTI is located before the third TTI in time sequence.

In a possible implementation, the method further includes: if the access network device sends the second part of CB to the terminal device in the fifth TTI outside the receiving time window and does not send the first part of CB, the access network device receives The third feedback information sent by the terminal device in the sixth TTI, where the third feedback information is used to feed back whether the terminal device correctly decodes the TB and/or the second part of CB received in the fifth TTI.

Generally, the sixth TTI is located after the third TTI in time sequence. However, if the duration of the second part of CB retransmitted by the access network device in the second TTI is much shorter than the length of one TTI, at this time, the sixth TTI is not strictly limited in time sequence and must be after the third TTI.

In a fifth aspect, the embodiment of the present application provides a terminal device, configured to execute the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the terminal device includes a unit for executing the method in the first aspect or any possible implementation manner of the first aspect.

In a sixth aspect, the present application provides an access network device, configured to execute the method in the second aspect or any possible implementation manner of the second aspect. Specifically, the access network device includes a unit for executing the second aspect or the method in any possible implementation manner of the second aspect.

In a seventh aspect, the embodiment of the present application provides a terminal device, configured to execute the method in the third aspect or any possible implementation manner of the third aspect. Specifically, the terminal device includes a unit for executing the third aspect or the method in any possible implementation manner of the third aspect.

In an eighth aspect, the present application provides an access network device, configured to execute the method in the fourth aspect or any possible implementation manner of the fourth aspect. Specifically, the access network device includes a unit for performing the fourth aspect or the method in any possible implementation manner of the fourth aspect.

In a ninth aspect, the present application provides a terminal device, where the terminal device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run computer programs from the memory. When the program is executed, the processor executes the above first aspect or the method in any possible implementation manner of the first aspect.

In a tenth aspect, the present application provides an access network device, where the access network device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run computer programs from the memory. When the program is executed, the processor executes the above-mentioned second aspect or the method in any possible implementation manner of the second aspect.

In an eleventh aspect, the present application provides a terminal device, where the terminal device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run computer programs from the memory. When the program is executed, the processor executes the third aspect or the method in any possible implementation manner of the third aspect.

In a twelfth aspect, the present application provides an access network device, where the access network device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run computer programs from the memory. When the program is executed, the processor executes the fourth aspect or the method in any possible implementation manner of the fourth aspect.

In a thirteenth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer can perform any possible operation of the above-mentioned first aspect or the first aspect. method in the implementation.

In a fourteenth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer executes any possible method of the above-mentioned second aspect or the second aspect. method in the implementation.

In a fifteenth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer executes any possible method of the above-mentioned third aspect or the third aspect. method in the implementation.

In a sixteenth aspect, the present application provides a computer-readable storage medium, in which instructions are stored in the computer-readable storage medium, and when it is run on a computer, the computer executes the above-mentioned fourth aspect or any possible method of the fourth aspect. method in the implementation.

In the embodiment of the present application, after the access network device sends a transmission block TB including multiple CBs to the terminal device, the terminal device respectively feeds back the correctly decoded CB and the incorrectly decoded CB, so that the access network device Only CBs that were not decoded correctly are retransmitted. In the prior art, the terminal device performs feedback for the entire TB, and if the terminal device fails to decode all the CBs correctly, subsequently, the access network device performs retransmission for the entire TB. Therefore, even if only part or even a very small amount of CBs are not correctly decoded by the terminal device, the access network device needs to retransmit the entire TB. In contrast, the method for sending and receiving feedback information provided by the embodiment of the present application avoids repeatedly sending CBs that have been correctly decoded, and improves the transmission efficiency of the system.

Description of drawings

FIG. 1 is a schematic interaction diagram of a method 100 for sending feedback information provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of sending feedback information provided by an embodiment of the present application.

FIG. 3 is a schematic interaction diagram of a method 200 for sending feedback information provided by another embodiment of the present application.

Fig. 4 is an example of sending feedback information provided in the example of this application.

Fig. 5 is another example of sending feedback information provided in the example of this application.

FIG. 6 is another example of sending feedback information provided in the example of this application.

Fig. 7 is another example of sending feedback information provided in the example of this application.

Fig. 8 is a schematic block diagram of a terminal device 300 provided in the embodiment of the application.

Fig. 9 is a schematic block diagram of an access network device 400 provided in an embodiment of the application.

Fig. 10 is a schematic block diagram of a terminal device 500 provided in the embodiment of the application.

Fig. 11 is a schematic block diagram of an access network device 600 provided in an embodiment of the application.

FIG. 12 is a schematic structural diagram of a terminal device 700 provided in the embodiment of the application.

Fig. 13 is a schematic structural diagram of an access network device 800 provided in the embodiment of the application.

FIG. 14 is a schematic structural diagram of a terminal device 900 provided in the embodiment of the application.

Fig. 15 is a schematic structural diagram of an access network device 1000 provided in the embodiment of the application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

First, a brief description is given of related concepts involved in the embodiments of the present application.

Transport block TB and coding block CB: in the prior art, one TB is split into multiple CBs for channel coding and decoding respectively. For example, for Turbo codes, the maximum number of bits of a CB is 6144, that is, if the number of bits of a TB exceeds 6144, the TB needs to be split into multiple CBs for channel coding and decoding respectively. For Low Density Parity Check Code (Low Density Parity Check Code, LDPC), the maximum number of bits of a CB is about 2000. Similarly, if the number of bits of a TB exceeds 2000, the TB needs to be split into more CBs Compile and decode separately.

In addition, each CB has an independent verification function. Taking the Turbo code as an example, each CB will perform a cyclic redundancy check (Cyclic Redundancy Check, CRC) before encoding. Correspondingly, after decoding a CB, the UE can determine whether the CB has been correctly decoded through the CRC check.

The access network device in the embodiment of the present application may be an evolved base station (Evolutional Node B, eNB or e-NodeB for short) in a long term evolution (Long Term Evolution, LTE) system, a macro base station, a micro base station (also Called "small base station"), pico base station, access point (Access Point, AP) or transmission point (TransmissionPoint, TP), wireless network controller, etc., can also be the gNodeB in the new wireless (New Radio, NR) system Wait.

A terminal device may also be called a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), and so on. The terminal device may communicate with one or more core networks via a radio access network (Radio Access Network, RAN). For example, a terminal device may be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, or the like. It can also be portable, pocket, handheld, computer built-in or vehicle-mounted mobile devices, and terminal equipment in future communication systems (eg, 5G).

In the existing LTE system, the feedback of the Hybrid Automatic Repeat Request (HARQ) and the retransmission of information are both in units of a transport block (Transport Block, TB). For example, when an access network device sends a TB to a terminal device, the terminal device will only feed back an acknowledgment (ACKnowledge , ACK) bits. And as long as one CB fails to be decoded successfully, the terminal device will also feed back a non-acknowledgement (NACKnowledge, NACK) bit for the entire TB to the access network device. Correspondingly, after receiving the NACK feedback sent by the terminal device, the access network device does not know which CBs the terminal device decoded successfully and failed to decode. Therefore, even if the terminal device decodes most of the CBs correctly , the access network device will still perform HARQ retransmission on all CBs in the entire TB subsequently.

In future communication technologies (for example, 5G), two important technical requirements are introduced: Enhanced MobileBroad Band (EMBB) and Ultra Reliable Low Latency Communication (URLLC). Among them, for EMBB, 5G will achieve a higher rate of data transmission than 4G, so a larger TB may be introduced. At the same time, considering the possibility of introducing a higher parallelism Low Density Parity Check Code (LowDensity Parity Check Code, LDPC), compared with 4G, a TB in 5G may be split into a larger number of CBs.

In the case that a TB may be split into more CBs, if only a small number of CBs received by the UE are not correctly decoded, but a large number of CBs are correctly decoded, then continue to use the existing technology The way of performing HARQ feedback and retransmission for TB will have a great impact on the transmission efficiency of the system.

For this reason, the embodiment of the present application proposes a method for sending and receiving feedback information, which can improve the transmission efficiency of the system. The method for sending and receiving feedback information provided by the embodiment of the present application will be described in detail below with reference to FIG. 1 to FIG. 3 .

The numbers "first" and "second" appearing in the following embodiments of the present application are only used to distinguish different objects, for example, to distinguish different TTIs or information.

FIG. 1 is a schematic interaction diagram of a method 100 for sending feedback information provided by an embodiment of the present application. As shown in FIG. 1 , the method 100 mainly includes steps 110 and 120 .

110. The terminal device receives the TB sent by the access network device in the first TTI. Wherein, the TB includes at least two CBs, and the at least two CBs include a first part CB and a second part CB.

120. If the terminal device receives the second part of CB sent by the access network device in the second TTI and does not receive the first part of CB, the terminal device sends the first feedback information and the second feedback information to the access network device. The access network device receives the first feedback information and the second feedback information sent by the terminal device.

Wherein, the first feedback information is used to feed back whether the terminal device correctly decodes the first part CB, and the second feedback information is used to feed back whether the terminal device correctly decodes the second part CB, and the second TTI is located after the first TTI in time sequence.

Note that the second feedback information is used to feed back whether the terminal device correctly decodes the second part CB. Optionally, in an embodiment, the second part CB here is not limited to the one received by the terminal device in the first TTI. The second part CB is also the second part CB retransmitted by the access network device received in the second TTI.

Or, optionally, in another embodiment, the second part of the CB here is the retransmission CB received by the terminal device in the second TTI. One possibility at this time is that the terminal device finds that it is a partial CB retransmission, that is, at this time, the access network device indicates to the terminal device that the current retransmission includes the second part of the CB but does not include the first part of the CB, and the terminal device will understand it as The second part of the CB in the previous initial transmission is the affected CB, such as being punctured or interfered, then the terminal device will not combine the decoding information of the second part of the CB currently retransmitted with the second part of the CB in the previous initial transmission. Perform HARQ merging, and the decoding will not consider the second part of the CB previously transmitted; or, the access network device can directly indicate to the terminal device that the current part of the retransmitted second part of the CB is affected by the previous initial transmission That part of CB, the terminal device will not perform HARQ combination of the decoding information of the second part of CB currently retransmitted and the second part of CB initially transmitted before, and will not consider the second part of CB initially transmitted before decoding. .

It should be understood that in the embodiment of the present application, the first part of CB and the second part of CB are two parts in one TB, or it can be understood that all CBs in one TB are regarded as a complete set, and the two subsets included in the complete set , where one subset includes the first part CB and the other subset includes the second part CB. Wherein, the first part CB and the second part CB may not overlap at all, that is, they do not include the same CB. Alternatively, the first part CB and the second part CB may partially overlap, ie both include the same CB.

Take the above-mentioned eMBB service and URLLC service as examples. When the access network device occupies some time-frequency resources to send eMBB service data to the terminal device, it may be necessary to send URLLC service data in bursts. Due to the low latency requirement of the URLLC service, and the priority of the URLLC service is higher than that of the eMBB service. Therefore, the access network device may perform puncturing for a short period of time on the TB used to send eMBB service data, so as to send the URLLC service with higher service priority. Alternatively, the access network device may superimpose and send URLLC service data on the TB that has already sent eMBB service data.

It can be understood that the puncturing of the TB by the access network equipment is very likely to cause some CBs in the TB to be punctured by URLLC service data and cannot be received by the terminal equipment. Or, in the case of superimposed transmission, because the transmission of URLLC will cause interference to the transmission of eMBB, the terminal device may not be able to correctly decode the CB of the superimposed transmission of URLLC service data and eMBB service data.

In this example, the CB that is not punctured or is not superimposed to send URLLC service data and eMBB service data is the first part of CB. On the contrary, the CB that is punctured or superimposed to send service data is the second part of CB.

It should be noted that, in the foregoing examples, hole punching specifically means that eMBB transmission is covered (or rewritten) by URLLC transmission. That is, the access network device no longer transmits eMBB service data on some time-frequency resources that originally need to transmit (or has already transmitted) eMBB service data, but instead transmits URLLC service data.

Superimposed transmission refers to the simultaneous transmission of URLLC service data on the time-frequency resource for transmitting eMBB service data.

For the distinction between the first part CB and the second CB part, it is mainly considered that the two parts can be divided independently based on their decoding probabilities. That is, the decoding probabilities of the CBs in the first part of CB are highly correlated, and the decoding probabilities of the CBs in the second part of CB are also highly correlated, but the decoding correlation between the first part of CB and the second part of CB not big. Specifically, for example, the second part of the CB in the eMBB TB is punctured or superimposed by URLLC, but the first part of the CB is not affected by URLLC. At this time, the second part of the CB may not be correctly decoded, and the first part of the CB A part of CBs has a high probability of being correctly decoded. For another example, the URLLC service of a neighboring cell causes inter-cell interference to the second part of CBs in the eMBB TB of this cell, but does not cause interference to the first part of CBs. Similarly, the second part of CBs may not be correctly decoded , and the probability of the first part of CB being correctly decoded is relatively high. Other similar situations are not limited, as long as it can be shown that the decoding probabilities of the first part CB and the second part CB are independent.

Specifically, the terminal device sending the first feedback information and the second feedback information to the access network device includes sending the first feedback information and the second feedback information to the access network device in the same TTI. Alternatively, the terminal device may also send the first feedback information and the second feedback information to the access network device at different TTIs.

FIG. 2 is a schematic diagram of sending feedback information provided by an embodiment of the present application. As shown in Figure 2, the terminal device sends feedback information to the access network device mainly includes the following process:

(1) In TTI n, the access network device sends a TB to the terminal device, and the TB includes 4 coded blocks CB (as shown in Figure 2, which are sequentially recorded as CB#0, CB#1, CB#2, and CB#3 ). Wherein, each CB carries eMBB service data. The terminal device receives the TB.

At the same time, URLLC service data is punctured or superimposed on the time-frequency resources occupied by the coding block CB#1.

Note that only one TB is used as an example in Figure 2 . Obviously, the access network device can send one or more TBs to the terminal device. The process of the terminal equipment feeding back to the access network equipment is the same. Here, only one TB is taken as an example for illustration.

It can be understood that, in the case of punched transmission, since the eMBB service data is no longer transmitted on the punched CB, the terminal device can only receive part of the eMBB service data (the unpunched CB), and is punched The eMBB service data originally to be transmitted on the CB of the hole cannot be received. In the case of superimposed transmission, due to the strong interference of URLLC service data, the CB (that is, CB#1) carrying both eMBB service data and URLLC service data has a high probability that it cannot be correctly received by the terminal device

In the embodiment of the present application, the access network device will retransmit the CB (that is, an example of the second part of the CB) sent by puncturing or superimposed transmission before the terminal device feeds back the decoding result of the TB, that is, step 202 .

(2) In TTI n+1, the access network device retransmits CB#1 to the terminal device.

(3) The terminal device feeds back the decoding result (that is, whether the decoding is correct) to the access network device.

It should be noted that the time sequence of (3) and (2) is not the same in different feedback methods. The specific implementation of each of the following embodiments shall prevail.

Optionally, as an embodiment, the terminal device sends the first feedback information to the access network device in the third TTI, and sends the second feedback information to the access network device in the fourth TTI, where the third TTI and the second The four TTIs are different TTIs in time.

In this embodiment, the terminal device respectively feeds back the decoding results of the first part of CB and the second part of CB to the access network device in different TTIs by using the first feedback information and the second feedback information.

Optionally, as an embodiment, the terminal device sends the first feedback information and the second feedback information to the access network device in the fifth TTI.

That is, in this embodiment of the application, after the terminal device receives the first part CB and the second part CB sent by the access network device, and also receives the second part CB retransmitted by the access network device, the terminal device is not sure whether it is correct or not. The decoded first part CB and the second part CB are respectively fed back to the access network device. Specifically, the first feedback information for feeding back whether the first part CB is correctly decoded and the second feedback information for feeding back whether the second part CB is correctly decoded may be sent to the access network device in the same TTI, or , and can also be sent to the access network device in different TTIs.

After the access network device retransmits the second part of CB to the terminal device, depending on whether the terminal device receives the retransmitted second part of CB within the receiving time window after the first TTI, the feedback mode of the terminal device is different, as follows Described separately.

It should be noted that "whether the retransmitted second part of CB" mentioned here refers to whether the terminal device has received the downlink control channel sent by the access network device. The downlink control channel is used to schedule the data channel, and the data channel It is used to bear the TB to be sent by the access network device to the terminal device, where the TB includes the second part CB.

Case 1

The terminal device receives the second part CB retransmitted by the access network device within the receiving time window.

Specifically, case 1 includes the following optional feedback modes.

way 1

Optionally, as an embodiment, the first feedback information is specifically used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI, and the second feedback information is specifically used to feed back whether the terminal device correctly decodes the first part CB received in the first TTI. The second part of the CB received by the second TTI.

Combining steps 201 and 202 described above, referring to the feedback method ① in Figure 2, the terminal device sends feedback information #A to the access network device in TTI n+4, so as to feedback to the access network device whether the decoding is correct. CB#0, CB#2 and CB#3 received in TTI n. Feedback information #B is sent to the access network device in TTI n+5, so as to feed back to the access network device whether the retransmission CB#1 received in TTI n+1 is correctly decoded.

way 2

Optionally, as an embodiment, the first feedback information includes a first part of feedback information and a second part of feedback information, and the first part of feedback information is used to feed back whether the terminal device correctly decodes the first part of CB received in the first TTI. The two-part feedback information is used to feed back whether the terminal device correctly decodes the second part of CB received in the first TTI;

And, the second feedback information is specifically used to indicate whether the terminal device correctly decodes the second part of CB received in the second TTI.

Referring to the feedback mode ② in Figure 2, the terminal device sends feedback information #A to the access network device in TTI n+4, specifically, the feedback information #A includes two parts of feedback information, and the first part of the feedback information is used to indicate whether it is correct or not CB#0, CB#2, and CB#3 received in TTIn are decoded, and the second part of the feedback information is used to indicate whether CB#1 received in TTI n is correctly decoded. At TTI n+5, the terminal device sends feedback information #B to the access network device, so as to feed back to the access network device whether the CB#1 received in TTI n+1 is correctly decoded.

Based on the previous introduction to TB and CB, it can be seen that the cyclic redundancy check of a TB includes two layers of CRC checks, that is, the CRC check for each CB included in the TB (that is, the first layer of CRC check) and the overall CRC check of TB (second layer CRC check).

It should be understood that the two-layer CRC check takes into account that all CBs in a TB have passed the CRC check, but in fact, some CBs that have passed the CRC check may not be correctly decoded. In other words, there may be false alarms in the decoding of this part of CB. Also, the occurrence of false alarms increases as the TB is divided into a greater number of CBs. Therefore, after the CRC check of each CB is passed, the CRC check of the whole TB needs to be performed again. In this way, once there is a false alarm in some CBs, even if all the CBs pass the CRC check, the CRC check for the whole TB will not pass. Therefore, it can be accurately judged whether each CB in the TB is decoded correctly.

In the embodiment of the present application, considering that there may be false alarms in the CRC check of some CBs, the idea of two-layer CRC check is applied to the independent feedback of the first part of CB and the second part of CB.

Optionally, as an embodiment, the terminal device sends fourth feedback information to the access network device in the third TTI, where the fourth feedback information is used to feed back whether the terminal device correctly decodes the TB; and/or

The terminal device sends fifth feedback information to the access network device in the fourth TTI, where the fifth feedback information is used to feed back whether the terminal device correctly decodes the TB.

In combination with the foregoing, when the terminal device gives feedback to the access network device in different TTIs, it sends the first feedback information to the access network device in the third TTI to feedback whether the terminal device correctly decodes the first part of CB, and In the fourth TTI, the second feedback information is sent to the access network device, so as to feed back whether the terminal device correctly decodes the second part CB. In this embodiment, the terminal device simultaneously sends fourth feedback information in the third TTI, so as to feed back whether the TB is decoded correctly. Alternatively, the terminal device simultaneously sends fifth feedback information in the fourth TTI, so as to feed back whether the TB is correctly decoded.

Optionally, as an embodiment, the terminal device sends sixth feedback information to the access network device in the fifth TTI, where the sixth feedback information is used to feed back whether the terminal device decodes the TB correctly.

Similarly, when the terminal device sends the first feedback information and the second feedback information to the access network device in the same TTI (that is, the fifth TTI), it may simultaneously send the sixth feedback information to the access network device in the fifth TTI. Feedback information to feed back whether the terminal device decodes the TB correctly. In this manner, false alarms that may occur during the terminal device's decoding of the CB can be prevented.

In the foregoing modes 1 and 2, the terminal device receives the second part of CB sent by the access network device in the second TTI, which is received by the terminal device within the receiving time window after the first TTI. The receiving time window is used by the terminal device to determine the maximum time period for waiting for the access network device to retransmit the second part of CB after the first TTI.

It should be noted that the length of the receiving time window mainly takes into account the processing time of the terminal device for receiving and decoding the TB or CB, and the packetization time for generating feedback information after decoding.

Specifically, if the duration of the receiving time window is too long, the terminal device may not have time to send feedback information in the third TTI. For example, if the end point of the receiving time window is closer to the start point of the third TTI. In order to control the receiving time window and the corresponding processing time, the duration of the retransmitted second part of CB in the second TTI is generally shorter than the duration of the second TTI, and the initial transmission of the whole TB in the first TTI may occupy the first TTI in time. In this way, the terminal device does not need to wait until the end of the second TTI before performing decoding processing and grouping of corresponding feedback information on the second part of CB in the second TTI. Correspondingly, the determination of the duration of the receiving time window may also be reserved in units of the duration occupied by the retransmitted second part CB. For example, if the duration of the second TTI is four times the duration of the retransmitted second part of the CB, it can be determined that the end point of the receiving time window is the end point of the second TTI, that is, the receiving time window includes 4 candidate positions for the access network device to send the retransmitted second part CB. Of course, other similar methods of determining the receiving time window and the selection of the duration occupied by the retransmission of the second part of the CB are not excluded, as long as the processing time for receiving and decoding the TB or CB can be taken into account, as well as the generation time after decoding. The package time of the feedback information is sufficient.

In the above manner 1 and manner 2, when receiving the second part CB sent by the access network device within the receiving time window, the terminal device performs feedback on the first part CB and the second part CB respectively. The following is another feedback mode of the terminal device in the case that the terminal device receives the second part of CB retransmitted by the access network device within the receiving time window after the first TTI.

FIG. 3 is a schematic interaction diagram of a method 200 for sending feedback information provided by another embodiment of the present application. As shown in FIG. 3 , the method 200 mainly includes steps 210 and 220 .

way 3

210. The terminal device receives a transport block TB sent by the access network device in the first TTI, where the TB includes at least two coding blocks CB, and the at least two CBs include a first part CB and a second part CB.

220. If the terminal device receives the second part of CB sent by the access network device in the second TTI and does not receive the first part of CB, the terminal device decodes the first part of CB received in the first TTI correctly and the first part of CB in the second TTI. The second part CB received in the second TTI, sends the first feedback information to the access network device in the third TTI, and the first feedback information is used to feedback whether the terminal device correctly decodes the first part received in the first TTI The CB and the second portion of the CB received in a second TTI, where the second TTI is within a receive time window after the first TTI.

It can be understood that, in the foregoing method 100, the terminal device receives the TB including the first part CB and the second part CB sent by the access network device in the first TTI, and subsequently, if the terminal device receives the TB from the access network device The second part of CB is sent in the second TTI and the first part of CB is not received, and the terminal device respectively feeds back to the access network device about whether the first part of CB and the second part of CB are correctly decoded.

In method 200, the same as method 100, the terminal device receives the TB including the first part CB and the second part CB sent by the access network device in the first TTI, and the terminal device receives the TB after the first TTI The second part of CB sent by the access network device in the second TTI is received within the time window. The difference is that in mode 1 and mode 2, the terminal device performs separate decoding on the CB received in the first TTI and the second TTI, and feeds back the decoding result to the access network device. In mode 3, the terminal device performs joint feedback to the access network device regarding whether the first part of CB received in the first TTI and the second part of CB received in the second TTI are correctly decoded.

That is to say, in this embodiment of the application, if the terminal device receives the part of CB retransmitted by the access network device (that is, the second part of CB) within the receiving time window of the first TTI of the TB sent by the access network device, The terminal device jointly decodes the received CB.

It should be understood that the joint decoding mentioned here refers to decoding the CBs (including the initial transmission CB and the retransmission CB) received in different TTIs belonging to the same TB. Combined with the decoding result, the decoding result for the entire TB (that is, whether it is correctly decoded) is fed back to the access network device.

In the embodiment of the present application, the receiving time window is used for the terminal device to determine the maximum time length for waiting for the access network device to send the second part of the CB after the first TTI.

In other words, after receiving the TB sent by the access network device in the first TTI, the terminal device will monitor whether the access network device continues to retransmit data within the receiving time window of the first TTI. If the CB retransmitted by the access network device is received in the second TTI within the receiving time window after the first TTI, the terminal device will base on the first part of CB and the second part of CB received in the first TTI, and The retransmission CB (that is, the second part of CB) received in two TTIs is jointly decoded for the entire TB, and the result of the joint decoding is subsequently fed back to the access network device.

The second part of CB here is not limited to be the second part of CB received by the terminal device in the first TTI, or the second part of CB received in the second TTI and retransmitted by the access network device.

Optionally, in another embodiment, the second part of CB here is the retransmission CB received by the terminal device in the second TTI. At this time, one possibility is that the terminal device finds that the CB received in the second TTI is a retransmission of part of the CB. In this case, the access network device needs to indicate to the terminal device that the current retransmission includes the second part of the CB but Part I CB is not included. In this way, the terminal device will determine the second part of the CB in the previous initial transmission as the affected CB (for example, the punctured or interfered CB). Then the terminal device will not perform HARQ combination of the decoding information of the second part of CB currently retransmitted and the second part of CB initially transmitted before, and will not consider the second part of CB initially transmitted before decoding.

Alternatively, the access network device may directly indicate to the terminal device that the currently retransmitted second part of the CB is the affected CB in the previous initial transmission. Therefore, the terminal device will not perform HARQ combination of the decoded information of the currently retransmitted second part of the CB with the previously initially transmitted second part of the CB, and will not consider the previously initially transmitted second part of the CB during decoding.

Correspondingly, the terminal device monitors whether the access network device continues to retransmit the CB within the receiving time window after the first TTI. If the CB retransmitted by the access network device is not received within the receiving time window, the terminal device will, after the receiving time window, based on the first part of the CB and the second part of the CB received in the first TTI, perform a check for the entire TB Decoding, and subsequently feeding back the decoding result to the access network device.

Continue to see Figure 2. As shown in mode ③ in FIG. 2 , the access network device sends a TB to the access network device in TTI n, and the TB includes coding blocks CB#0, CB#1, CB#2 and CB#3. The access network device retransmits CB#1 to the terminal device in TTI n+1. In this embodiment, we consider that the terminal device has received the CB#1 retransmitted by the access network device within the receiving time window of TTI n. In this way, the terminal device sends feedback information #A to the access network device at TTI n+4, so as to feed back to the access network device whether the terminal device correctly decodes the entire TB. Among them, whether the terminal device correctly decodes the entire TB refers to the CB#0, CB#1, CB#2 and CB#3 sent by the access network device in TTI n, and the CB# retransmitted in TTI n+1 1 Feedback after joint decoding.

Optionally, as an embodiment, the method also includes:

If the terminal device does not receive the second part of CB within the receiving time window, the terminal device sends the second feedback information to the access network device in the fourth TTI, and the second feedback information is used to feed back whether the terminal device correctly decoded the CB in the first The TB received in the TTI, where the fourth TTI is the same as the third TTI, or the fourth TTI is located before the third TTI in time sequence.

It should be understood that the first feedback information is used to feed back whether the terminal device correctly decodes the TB received in the first TTI, that is, the terminal device only uses the first part of CB and the second part of CB received in the first TTI. The entire TB is decoded.

Optionally, as an embodiment, the method also includes:

If the terminal device receives the second part of CB in the fifth TTI within the receiving time window, the terminal device sends the third feedback information to the access network device in the sixth TTI, and the third feedback information is used to feed back to the access network device Whether the terminal device correctly decodes the TB, and/or the second part of the CB received in the fifth TTI.

It should be noted that, if the duration occupied by the retransmitted second part of CB is much shorter than the length of one TTI, the time for decoding processing and feedback sending of the retransmitted second part of CB can be advanced. Therefore, the time sequence of the sixth TTI is not strictly limited to be after the third TTI.

In addition, it should be noted that the third feedback information and the first feedback information are independent feedback information, and/or the third feedback information and the second feedback information are independent feedback information. That is, the feedback information corresponding to the receiving time window and outside the receiving time window are independent. In addition, the sixth TTI used for sending the third feedback information is independent from the third TTI used for sending the first feedback information, and/or, the sixth TTI used for sending the third feedback information is independent of the sixth TTI used for sending the second feedback information. The fourth TTI of the feedback information is independent.

Specifically, as described above, if the terminal device does not receive the part of CB retransmitted by the access network device (that is, the second part of CB) within the receiving time window after the first TTI, the terminal device sends The access network sends the first feedback information, which is used to feed back whether the terminal device correctly decodes the entire TB based on the first part CB and the second part CB received in the first TTI. And subsequently, if the terminal device receives the second part of CB sent by the access network device at the fifth TTI outside the receiving time window, the terminal device sends the first feedback information to the access network device on the basis of sending the first feedback information to the access network device. The network device sends third feedback information. Here, the third feedback information includes various forms.

For example, the third feedback information is used to feed back whether the second part CB received in the fifth TTI is correctly decoded.

Alternatively, the third feedback information is used to feed back whether the entire TB is correctly decoded. In this case, the terminal device performs joint decoding for this TB based on the first part of CB and the second part of CB received in the first TTI, and the second part of CB received outside the receiving time window, and decodes The result is fed back to the access network device through the third feedback information.

Alternatively, the third feedback information is simultaneously used to feed back whether the second part CB received in the fifth TTI is correctly decoded and whether the TB is correctly decoded.

In this embodiment of the present application, a situation opposite to the above situation 1 is that after the access network device retransmits the second part CB to the terminal device, the terminal device does not receive the retransmitted second part CB.

Similarly, the term "not receiving the second part of CB retransmitted by the access network device" here means that the terminal device has not received the downlink control channel sent by the access network device for carrying the retransmitted second part of CB .

Case 2

The terminal device does not receive the second part of CB retransmitted by the access network device within the receiving time window.

In other words, in case 2, the terminal device receives the second part of CB outside the receiving time window.

Optionally, as an embodiment, the method also includes:

If the terminal device does not receive the second part of CB after the first TTI, the terminal device sends third feedback information to the access network device, and the third feedback information is used to feedback whether the terminal device correctly decodes the TB received in the first TTI .

Sometimes, the terminal device may miss the control channel sent by the access network device, for example, the terminal device misses the downlink control channel for retransmitting the second part of CB. At this time, the terminal device does not receive the second part CB retransmitted by the access network device within the receiving time window. In this case, for CB#0, CB#1, CB#2 and CB#3 sent by the access network device in TTI n, the terminal device feeds back to the access network device whether the entire TB is correctly decoded.

Optionally, the terminal device sends missed detection indication information to the access network device, where the missed detection indication information is used to indicate that the terminal device has missed detection of the downlink control channel.

Correspondingly, the access network device may treat the missed detection of the terminal device as NACK feedback and process it based on the missed detection indication information.

Fig. 4 is an example of sending feedback information provided in the example of this application. As shown in Figure 4, the access network device sends TBs including CB#0, CB#1, CB#2, and CB#3 to the terminal device in TTIn, and retransmits CB#1 in TTI n+1 . The terminal device sends feedback information #1 to the access network device at TTI n+4 to feedback whether the CB#0, CB#2 and CB#3 received in TTI n are correctly decoded (as an example of the first part of CB), Send feedback information #2 to the access network device in TTI n+5, to feedback whether the CB #1 received in TTI n+1 is correctly decoded (as an example of the second part of CB).

In addition, for the case that the terminal device misses the retransmitted CB, the terminal device sends the missed detection indication information to the access network device, so as to indicate to the access network device that the terminal device missed the retransmitted CB. The access network equipment generally regards the missed detection as incorrect decoding and handles it.

Fig. 5 is another example of sending feedback information provided in the example of this application. The difference from FIG. 4 is that the terminal device simultaneously feeds back the first part of CB and the second part of CB in one TTI. In this feedback form, it can be considered that the feedback information #3 sent by the terminal device to the access network device includes two parts of feedback information, for example, includes 2 indication bits. The first indication bit is used to indicate whether CB#0, CB#2 and CB#3 received in TTI n are correctly decoded. The second indication bit is used to indicate whether the CB#1 received in TTI n+1 is correctly decoded.

FIG. 6 is another example of sending feedback information provided in the example of this application. As shown in Figure 6, the terminal device feeds back to the access network device whether it correctly decodes CB#0, CB#2, and CB#3 received in TTI n in different TTIs, and whether it correctly decodes CB#0, CB#2, and CB#3 received in TTI n CB#1 received in n+1. Furthermore, in the feedback mode shown in Figure 6, the terminal equipment feeds back to the access network equipment in TTI n+4 whether CB#0, CB#2, and CB#3 are correctly decoded, and at the same time, sends The network device feedbacks whether the whole TB can be correctly decoded based on the CB#0, CB#1, CB#2 and CB#3 received in TTI n. And/or, the terminal device feeds back to the access network device whether the retransmitted CB (that is, CB#1) is correctly decoded in TTI n+5, and at the same time, feeds back to the access network device whether it is correctly decoded based on TTI n and Whether CB#0, CB#1, CB#2 and CB#3 received in TTI n+1 can correctly decode the whole TB.

Fig. 7 is another example of sending feedback information provided in the example of this application. The difference from FIG. 6 is that, in the feedback mode shown in FIG. 6 , the terminal equipment feeds back to the access network equipment through different TTIs. In Fig. 7, the terminal device simultaneously feeds back to the access network device whether to correctly decode CB#0, CB#2 and CB#3 received in TTI n in one TTI (TTI n+5), and CB#1 received in TTI n+1. At the same time, the terminal device feeds back to the access network device in TTI n+5, based on CB#0, CB#2 and CB#3 received in TTI and CB#1 received in TTI n+1, whether Correctly decodes the overall TB.

In the prior art, the terminal device performs feedback for the entire TB, and if the terminal device fails to decode all the CBs correctly, subsequently, the access network device performs retransmission for the entire TB. Therefore, even if only part or even a very small amount of CBs are not correctly decoded by the terminal device, the access network device needs to retransmit the entire TB. However, in the embodiment of the present application, after the access network device sends a transmission block TB including multiple CBs to the terminal device, the terminal device respectively feeds back the correctly decoded CB and the incorrectly decoded CB, so that the access network The device only retransmits the incorrectly decoded CBs. In contrast, the method for sending and receiving feedback information provided by the embodiment of the present application avoids repeatedly sending CBs that have been correctly decoded, and improves the transmission efficiency of the system.

The method for sending and receiving feedback information provided by the embodiment of the present application is described above with reference to FIG. 1 to FIG. 7 . The access network device and the terminal device provided by the embodiment of the present application will be described in detail below with reference to FIG. 8 to FIG. 11 .

FIG. 8 is a schematic block diagram of a terminal device 300 provided in an embodiment of the present application. As shown in FIG. 8, the terminal device 300 includes:

The receiving unit 310 is configured to receive the transmission block TB sent by the access network device in the first transmission time interval TTI, the TB includes at least two coding blocks CB, and the at least two CBs include the first part CB and the second part CB ;

The sending unit 320 is configured to send the first feedback information and the second Feedback information, the first feedback information is used to feed back whether the terminal device correctly decodes the first part CB, and the second feedback information is used to feed back whether the terminal device correctly decodes the second part CB, wherein the second TTI is located in the time sequence After the first TTI.

Each unit in the terminal device 300 provided in the embodiment of the present application and the above-mentioned other operations or functions are respectively intended to implement a corresponding process performed by the terminal device in the method 100 for sending feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

FIG. 9 is a schematic block diagram of an access network device 400 provided by an embodiment of the present application. As shown in FIG. 9, the access network device 400 includes:

A sending unit 410, configured to send a transport block TB to the terminal device in a first transmission time interval TTI, where the TB includes at least two coded blocks CB, and the at least two CBs include a first part CB and a second part CB;

The receiving unit 420 is configured to receive the first feedback information and the second feedback information sent by the terminal device when the sending unit sends the second part CB to the terminal device in the second TTI and does not send the first part CB, the first feedback information The information is used to feed back whether the terminal device correctly decodes the first part of CB, and the second feedback information is used to feed back whether the terminal device correctly decodes the second part of CB, wherein the second TTI is located after the first TTI in time sequence.

Each unit in the access network device 400 provided in the embodiment of the present application and other operations or functions described above are respectively intended to implement the corresponding processes performed by the access network device in the method 100 for receiving feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

FIG. 10 is a schematic block diagram of a terminal device 500 provided in an embodiment of the present application. As shown in FIG. 8, the terminal device 500 includes:

The receiving unit 510 is configured to receive the transmission block TB sent by the access network device in the first transmission time interval TTI, the TB includes at least two coding blocks CB, and the at least two CBs include the first part CB and the second part CB ;

The receiving unit 510 is further configured to receive the second part of CB sent by the access network device in the second TTI;

The processing unit 520 is configured to determine whether to correctly decode the CB received by the receiving unit in the first TTI when the receiving unit receives the second part CB sent by the access network device in the second TTI and does not receive the first part CB. The first part of CB received and the second part of CB received in the second TTI;

The sending unit 530 is configured to send first feedback information to the access network device in the third TTI, where the first feedback information is used to feed back whether the terminal device correctly decodes the first part of CB received by the receiving unit in the first TTI and the second part of CB received in the second TTI, wherein the second TTI is located within a receiving time window after the first TTI, and the receiving time window is used by the processing unit to determine that the waiting access network device is after the first TTI The maximum duration for sending the second part of CB.

Each unit in the terminal device 500 provided in the embodiment of the present application and the above-mentioned other operations or functions are respectively intended to implement a corresponding process performed by the terminal device in the method 200 for sending feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

FIG. 11 is a schematic block diagram of an access network device 600 provided in an embodiment of the present application. As shown in Figure 11, the access network device 600 includes:

A sending unit 610, configured to send a transport block TB to the terminal device in a first transmission time interval TTI, where the TB includes at least two coded blocks CB, and the at least two CBs include a first part CB and a second part CB;

The receiving unit 620 is configured to receive the first feedback information sent by the terminal device in the third TTI when the receiving unit sends the second part CB to the terminal device in the second TTI and does not send the first part CB, the first feedback information The information is used to feedback whether the processing unit correctly decodes the first part of CB received by the receiving unit in the first TTI and the second part of CB received in the second TTI, wherein the second TTI is located at the receiving time after the first TTI In the window, the receiving time window is used by the processing unit to determine the maximum duration of waiting for the access network device to send the second part of CB after the first TTI.

Each unit in the access network device 600 provided in the embodiment of the present application and the above-mentioned other operations or functions are respectively intended to implement the corresponding processes performed by the access network device in the method 200 for receiving feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

FIG. 12 is a schematic structural diagram of a terminal device 700 provided in an embodiment of the present application. As shown in FIG. 12, a terminal device 700 includes: one or more processors 701, one or more memories 702, and one or more transceivers (each transceiver includes a transmitter 703 and a receiver 704). The transmitter 703 or the receiver 704 is connected to one or more antennas 705, and transmits and receives signals through the antennas. Computer program instructions (or, codes) are stored in the memory 702 . The processor 701 executes computer program instructions stored in the memory 702, so as to implement the corresponding process and/or operations performed by the terminal device in the method 100 for sending feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

It should be noted that the terminal device 300 shown in FIG. 8 may be implemented by the terminal device 700 shown in FIG. 12 . For example, the receiving unit shown in FIG. 8 can be realized by the receiver shown in FIG. 12 , and the sending unit can be realized by a transmitter.

FIG. 13 is a schematic structural diagram of an access network device 800 provided in an embodiment of the present application. As shown in FIG. 13, the access network device 800 includes: one or more processors 801, one or more memories 802, and one or more transceivers (each transceiver includes a transmitter 803 and a receiver 804). The transmitter 803 or the receiver 804 is connected to one or more antennas 805, and sends and receives signals through the antennas. Computer program instructions (or, codes) are stored in the memory 802 . The processor 801 executes computer program instructions stored in the memory 802, so as to implement the corresponding process and/or operations performed by the access network device in the method 100 for receiving feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

Similarly, the access network device 400 shown in FIG. 9 may be implemented by the access network device 800 shown in FIG. 13 . For example, the sending unit shown in FIG. 9 can be realized by the transmitter shown in FIG. 13 , and the receiving unit can be realized by a receiver.

FIG. 14 is a schematic structural diagram of a terminal device 900 provided in an embodiment of the present application. As shown in FIG. 14, a terminal device 900 includes: one or more processors 901, one or more memories 902, and one or more transceivers (each transceiver includes a transmitter 903 and a receiver 904). The transmitter 903 or receiver 904 is connected to one or more antennas 905, and sends and receives signals through the antennas. Computer program instructions (or, codes) are stored in the memory 902 . The processor 901 executes computer program instructions stored in the memory 902, so as to implement the corresponding processes and/or operations performed by the terminal device in the method 200 for sending feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

Similarly, the terminal device 500 shown in FIG. 10 can be realized by the terminal device 900 shown in FIG. 14 . For example, the sending unit shown in FIG. 10 may be implemented by the transmitter shown in FIG. 14 , the receiving unit may be implemented by a receiver, and the processing unit may be implemented by a processor.

FIG. 15 is a schematic structural diagram of an access network device 1000 provided in an embodiment of the present application. As shown in Fig. 15, the access network device 1000 includes: one or more processors 1001, one or more memories 1002, and one or more transceivers (each transceiver includes a transmitter 1003 and a receiver 1004). The transmitter 1003 or receiver 1004 is connected to one or more antennas 1005, and sends and receives signals through the antennas. Computer program instructions (or, codes) are stored in the memory 1002 . The processor 1001 executes computer program instructions stored in the memory 1002, so as to implement the corresponding processes and/or operations performed by the access network device in the method 200 for receiving feedback information provided in the embodiment of the present application. For the sake of brevity, details are not repeated here.

Similarly, the access network device 600 shown in FIG. 11 may be implemented by the access network device 1000 shown in FIG. 15 . For example, the sending unit shown in FIG. 11 can be realized by the transmitter shown in FIG. 15 , and the receiving unit can be realized by a receiver.

In the above embodiments, the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the program execution of the application scheme Wait. For example, a processor may include a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, and the like. The processor may distribute the functions of control and signal processing of the mobile device among these devices according to their respective functions. Additionally, a processor may include functionality to operate one or more software programs, which may be stored in memory.

The memory may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of memory that can store information and instructions dynamic storage device. It can also be Electrically Erasable Programmable Read-Only Memory (EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD-ROM) or other CD storage, CD storage (including compact CD, laser CD, CD, Digital Versatile Disc, Blu-ray Disc, etc.), magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer , but not limited to this. The memory can exist independently, or it can be integrated with the processor.

The transceiver may include, for example, an infrared transceiver, a wireless transceiver, a wireless Universal Serial Bus (Universal Serial Bus, USB) transceiver, a Bluetooth transceiver, and the like. Although not shown, the access network device can transmit signals (or data) through a transmitter and/or receive signals (data) through a receiver using a corresponding communication technology.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (44)

1. a kind of method sending feedback information, which is characterized in that the method includes：

The transmission block TB, the TB that terminal device receives access network equipment transmission in the first Transmission Time Interval TTI include extremely Few two encoding blocks CB, at least two CB include first part CB and second part CB；

If the terminal device receives the second part CB that the access network equipment is sent in the 2nd TTI and does not receive To the first part CB, the terminal device sends the first feedback information and the second feedback information to the access network equipment, First feedback information for feed back the terminal device whether first part CB described in correct decoding, second feedback letter Breath for feed back the terminal device whether second part CB described in correct decoding, wherein the 2nd TTI is in time sequencing After the first TTI.

2. according to the method described in claim 1, it is characterized in that, the terminal device sends first to the access network equipment Feedback information and the second feedback information, including：

The terminal device sends first feedback information in the 3rd TTI to the access network equipment, and in the 4th TTI Second feedback information is sent to the access network equipment, wherein the 3rd TTI and the 4th TTI are in time Different TTI.

3. according to the method described in claim 1, it is characterized in that, the terminal device in the 5th TTI to the access net Equipment sends first feedback information and second feedback information.

4. according to the method in claim 2 or 3, which is characterized in that first feedback information is specifically used for described in feedback Terminal device whether the first part CB that correct decoding is received in the first TTI, second feedback information is specific For feed back the terminal device whether the second part CB that correct decoding is received in the 2nd TTI.

5. according to the method described in claim 2, it is characterized in that, first feedback information includes first part's feedback information With second part feedback information, whether correct decoding is described for feeding back the terminal device for first part's feedback information The first part CB that first TTI is received, whether just the second part feedback information for feeding back the terminal device Really decode the second part CB received in the first TTI；And

Second feedback information is specifically used for indicating whether correct decoding is received in the 2nd TTI for the terminal device The second part CB.

6. according to the method described in claim 1, it is characterized in that, the method further includes：

If the terminal device does not receive the second part CB after the first TTI, the terminal device is to described Access network equipment sends third feedback information, and the third feedback information is used to feed back the terminal to the access network equipment and set It is standby whether the TB that correct decoding is received in the first TTI.

7. according to the method described in claim 2, it is characterized in that, the method further includes：

The terminal device sends the 4th feedback information, the 4th feedback in the 3rd TTI to the access network equipment Information be used for the access network equipment feed back the terminal device whether TB described in correct decoding；And/or

The terminal device sends the 5th feedback information, the 5th feedback in the 4th TTI to the access network equipment Information be used for the access network equipment feed back the terminal device whether TB described in correct decoding.

8. according to the method described in claim 3, it is characterized in that, the method further includes：

The terminal device sends the 6th feedback information, the 6th feedback in the 5th TTI to the access network equipment Information be used for the access network equipment feed back the terminal device whether TB described in correct decoding.

9. a kind of method receiving feedback information, which is characterized in that the method includes：

It includes at least two that access network equipment sends transmission block TB, the TB in the first Transmission Time Interval TTI to terminal device A encoding block CB, at least two CB include first part CB and second part CB；

If the access network equipment sends the second part CB to the terminal device in the 2nd TTI and does not send described the A part of CB, the access network equipment receives the first feedback information and the second feedback information that the terminal device is sent, described First feedback information for feed back the terminal device whether first part CB described in correct decoding, second feedback information uses In feed back the terminal device whether second part CB described in correct decoding, wherein the 2nd TTI is located in time sequencing After first TTI.

10. according to the method described in claim 9, it is characterized in that, the access network equipment receives the terminal device transmission The first feedback information and the second feedback information, including：

The access network equipment receives first feedback information that the terminal device is sent in the 3rd TTI, and the 4th Second feedback information that the terminal device is sent is received in TTI, wherein the 3rd TTI and the 4th TTI when Between it is upper be different TTI.

11. according to the method described in claim 9, it is characterized in that, the access network equipment receives the terminal device transmission The first feedback information and the second feedback information, including：

The access network equipment receives first feedback information and described second that the terminal device is sent in the 5th TTI Feedback information.

12. the method according to claim 10 or 11, which is characterized in that first feedback information is specifically used for feedback institute State terminal device whether the first part CB that correct decoding receives in the first TTI, second feedback information For feed back the terminal device whether the second part CB that correct decoding receives in the 2nd TTI.

13. according to the method described in claim 10, it is characterized in that, first feedback information includes first part's feedback letter Breath and second part feedback information, whether correct decoding is in institute for feeding back the terminal device for first part's feedback information The first part CB that the first TTI is received is stated, whether the second part feedback information is for feeding back the terminal device The second part CB that correct decoding is received in the first TTI；And

Second feedback information is specifically used for indicating whether correct decoding is received in the 2nd TTI for the terminal device The second part CB.

14. according to the method described in claim 9, it is characterized in that, the method further includes：

The access network equipment receives the third feedback information that the terminal device is sent, and the third feedback information is the end End equipment is sent to the access after not receiving the second part CB that the access network equipment is sent after the first TTI Net equipment, for feeding back the terminal device, whether correct decoding receives the third feedback information in the first TTI The TB.

15. according to the method described in claim 10, it is characterized in that, the method further includes：

The access network equipment receives the 4th feedback information that the terminal device is sent in the 3rd TTI, and the described 4th Feedback information for feed back the terminal device whether TB described in correct decoding；And/or

The access network equipment receives the 5th feedback information that the terminal device is sent in the 4th TTI, and the described 5th Feedback information for feed back the terminal device whether TB described in correct decoding.

16. according to the method for claim 11, which is characterized in that the method further includes：

The access network equipment receives the 6th feedback information that the terminal device is sent in the 5th TTI, and the described 6th Feedback information for feed back the terminal device whether TB described in correct decoding.

17. a kind of method sending feedback information, which is characterized in that the method includes：

The transmission block TB, the TB that terminal device receives access network equipment transmission in the first Transmission Time Interval TTI include extremely Few two encoding blocks CB, at least two CB include first part CB and second part CB；

If the terminal device receives the second part CB that the access network equipment is sent in the 2nd TTI and does not receive institute State first part CB, the terminal device sends the first feedback information in the 3rd TTI to the access network equipment, and described first Feedback information for feed back the terminal device whether the first part CB that correct decoding receives in the first TTI With the second part CB received in the 2nd TTI, wherein the 2nd TTI is located at after the first TTI In receiving time window, the receiving time window is determined for the terminal device waits for the access network equipment described first The maximum time of the second part CB is sent after TTI.

18. according to the method for claim 17, which is characterized in that the method further includes：

If the terminal device does not receive the second part CB in the receiving time window, the terminal device is the 4th The second feedback information is sent to the access network equipment in TTI, second feedback information is used for anti-to the access network equipment Present the terminal device whether the TB that correct decoding is received in the first TTI, wherein the 4th TTI with it is described 3rd TTI is identical or the 4th TTI is located in time sequencing before the 3rd TTI.

19. the method according to claim 17 or 18, which is characterized in that the method further includes：

If the terminal device receives the second part CB in the 5th TTI except the receiving time window and does not receive To the first part CB, the terminal device sends third feedback information in the 6th TTI to the access network equipment, described Third feedback information be used for the access network equipment feed back the terminal device whether TB described in correct decoding, and/or in institute State the second part CB received in the 5th TTI.

20. a kind of method receiving feedback information, which is characterized in that the method includes：

It includes at least two that access network equipment sends transmission block TB, the TB in the first Transmission Time Interval TTI to terminal device A encoding block CB, at least two CB include first part CB and second part CB；

If the access network equipment sends second part CB to the terminal device in the 2nd TTI and does not send described first CB, the access network equipment is divided to receive the first feedback information that the terminal device is sent, first feedback in the 3rd TTI Information for feed back the terminal device first part CB whether correct decoding receives in the first TTI and The second part CB received in 2nd TTI, wherein the 2nd TTI is located at the reception after the first TTI In time window, the receiving time window determined for the terminal device wait for the access network equipment the first TTI it The maximum time of the second part CB is sent afterwards.

21. according to the method for claim 20, which is characterized in that the method further includes：

If the access network equipment sends the second part CB not in the receiving time window to the terminal device, described Access network equipment receives the second feedback information that the terminal device is sent in the 4th TTI, and second feedback information is used for Feed back the terminal device whether the TB that correct decoding is received in the first TTI, wherein the 4th TTI and institute State that the 3rd TTI is identical or the 4th TTI is located in time sequencing before the 3rd TTI.

22. the method according to claim 20 or 21, which is characterized in that the method further includes：

If the access network equipment sends described second in the 5th TTI except the receiving time window to the terminal device Part CB and the first part CB is not sent, the access network equipment receives what the terminal device was sent in the 6th TTI Third feedback information, the third feedback information for feed back the terminal device whether TB described in correct decoding, and/or in institute State the second part CB received in the 5th TTI.

23. a kind of terminal device, which is characterized in that including：

Receiving unit, the transmission block TB sent for receiving access network equipment in the first Transmission Time Interval TTI, the TB packets It includes first part CB and second part CB to include at least two encoding block CB, at least two CB；

Transmission unit, for receiving described second that the access network equipment is sent in the 2nd TTI in the receiving unit Part CB and in the case of not receiving the first part CB, the first feedback information and second is sent to the access network equipment Feedback information, first feedback information for feed back the terminal device whether first part CB described in correct decoding, it is described Second feedback information for feed back the terminal device whether second part CB described in correct decoding, wherein the 2nd TTI exists It is located at after the first TTI in time sequencing.

24. terminal device according to claim 23, which is characterized in that the transmission unit is specifically used in the 3rd TTI It is middle to send first feedback information to the access network equipment, and to described in access network equipment transmission in the 4th TTI Second feedback information, wherein the 3rd TTI and the 4th TTI is different TTI in time.

25. terminal device according to claim 23, which is characterized in that the transmission unit is specifically used in the 5th TTI It is middle to send first feedback information and second feedback information to the access network equipment.

26. the terminal device according to claim 22 or 23, which is characterized in that first feedback information is specifically used for anti- Present the terminal device whether the first part CB that correct decoding is received in the first TTI, second feedback letter Breath be specifically used for feeding back the terminal device whether the second part CB that correct decoding is received in the 2nd TTI.

27. terminal device according to claim 24, which is characterized in that first feedback information includes that first part is anti- Feedforward information and second part feedback information, first part's feedback information for feed back the terminal device whether correct decoding In the first part CB that the first TTI is received, the second part feedback information is for feeding back the terminal device Whether the second part CB that correct decoding is received in the first TTI；

And second feedback information is specifically used for indicating whether correct decoding connects the terminal device in the 2nd TTI The second part CB received.

28. terminal device according to claim 23, which is characterized in that the transmission unit is additionally operable to, in the reception Unit sends third in the case where not receiving the second part CB after the first TTI, to the access network equipment Feedback information, the third feedback information are used to feed back the terminal device to the access network equipment whether correct decoding to be in institute State the TB that the first TTI is received.

29. terminal device according to claim 24, which is characterized in that the transmission unit is additionally operable in the third The 4th feedback information is sent to the access network equipment in TTI, the 4th feedback information is used for anti-to the access network equipment Present the terminal device whether TB described in correct decoding；And/or

The transmission unit is additionally operable in the 4th TTI send the 5th feedback information to the access network equipment, and described the Five feedback informations be used for the access network equipment feed back the terminal device whether TB described in correct decoding.

30. terminal device according to claim 25, which is characterized in that the transmission unit is additionally operable to the described 5th The 6th feedback information is sent to the access network equipment in TTI, the 6th feedback information is used for anti-to the access network equipment Present the terminal device whether TB described in correct decoding.

31. a kind of access network equipment, which is characterized in that including：

Transmission unit includes at least for sending transmission block TB, the TB to terminal device in the first Transmission Time Interval TTI Two encoding blocks CB, at least two CB include first part CB and second part CB；

Receiving unit, for the transmission unit in the 2nd TTI to the terminal device send the second part CB and In the case of not sending the first part CB, the first feedback information and the second feedback letter that the terminal device is sent are received Breath, first feedback information for feed back the terminal device whether first part CB described in correct decoding, described second is anti- Feedforward information for feed back the terminal device whether second part CB described in correct decoding, wherein the 2nd TTI is suitable in the time It is located at after the first TTI in sequence.

32. access network equipment according to claim 31, which is characterized in that the receiving unit is specifically used in third First feedback information that the terminal device is sent is received in TTI, and is received the terminal device in the 4th TTI and sent Second feedback information, wherein the 3rd TTI and the 4th TTI in time be different TTI.

33. access network equipment according to claim 31, which is characterized in that the receiving unit is specifically used for the 5th First feedback information and second feedback information that the terminal device is sent are received in TTI.

34. the access network equipment according to claim 32 or 33, which is characterized in that first feedback information is specifically used for Feed back the terminal device whether the first part CB that correct decoding receives in the first TTI, described second is anti- Feedforward information be specifically used for feeding back the terminal device whether the second part that correct decoding receives in the 2nd TTI CB。

35. access network equipment according to claim 32, which is characterized in that first feedback information includes first part Feedback information and second part feedback information, first part's feedback information is for feeding back whether the terminal device is correctly translated The first part CB that code is received in the first TTI, the second part feedback information are set for feeding back the terminal It is standby whether the second part CB that correct decoding is received in the first TTI；

And second feedback information is specifically used for indicating whether correct decoding connects the terminal device in the 2nd TTI The second part CB received.

36. access network equipment according to claim 31, which is characterized in that the receiving unit is additionally operable to receive the end The third feedback information that end equipment is sent, the third feedback information is that the terminal device does not connect after the first TTI It is sent to the access network equipment, the third in the case of receiving the second part CB that the access network equipment is sent Feedback information for feed back the terminal device whether the TB that correct decoding is received in the first TTI.

37. access network equipment according to claim 32, which is characterized in that the receiving unit is additionally operable in the third The 4th feedback information that the terminal device is sent is received in TTI, the 4th feedback information is for feeding back the terminal device Whether TB described in correct decoding；And/or

The receiving unit is additionally operable to receive the 5th feedback information that the terminal device is sent, and the 5th feedback information is used for Feed back the terminal device whether TB described in correct decoding.

38. access network equipment according to claim 33, which is characterized in that the receiving unit is additionally operable to the described 5th The 6th feedback information that the terminal device is sent is received in TTI, the 6th feedback information is for feeding back the terminal device Whether TB described in correct decoding.

39. a kind of terminal device, which is characterized in that including：

Receiving unit, the transmission block TB sent for receiving access network equipment in the first Transmission Time Interval TTI, the TB packets It includes first part CB and second part CB to include at least two encoding block CB, at least two CB；

The receiving unit is additionally operable to receive the second part CB that the access network equipment is sent in the 2nd TTI；

Processing unit, for receiving the second part CB that the access network equipment is sent in the 2nd TTI in the receiving unit And in the case of not receiving the first part CB, it is determined whether receiving unit described in correct decoding connects in the first TTI The first part CB received the and second part CB received in the 2nd TTI；

Transmission unit is used for according to the processing unit it is confirmed that receiving unit described in no correct decoding is in the first TTI In the first part CB received the and second part CB received in the 2nd TTI, in the 3rd TTI to The access network equipment sends the first feedback information, and first feedback information is for feeding back whether the terminal device is correctly translated The code receiving unit first part CB received in the first TTI and received in the 2nd TTI second Part CB, wherein the 2nd TTI is located in the receiving time window after the first TTI, and the receiving time window is for true Wait for the access network equipment to send the maximum time of the second part CB after the first TTI surely.

40. terminal device according to claim 39, which is characterized in that the transmission unit is additionally operable to, in the reception In the case that unit does not receive the second part CB in the receiving time window, to the access net in the 4th TTI Equipment sends the second feedback information, and second feedback information is used to whether feed back the terminal device to the access network equipment The TB that correct decoding is received in the first TTI, wherein the 4th TTI and the 3rd TTI are identical or described 4th TTI is located in time sequencing before the 3rd TTI.

41. the terminal device according to claim 39 or 40, which is characterized in that the transmission unit is additionally operable to, described Receiving unit receives the second part CB in the 5th TTI except the receiving time window and does not receive described first In the case of the CB of part, third feedback information is sent to the access network equipment in the 6th TTI, the third feedback information is used In feed back the terminal device whether TB described in correct decoding, and/or the second part that is received in the 5th TTI CB。

42. a kind of access network equipment, which is characterized in that including：

Transmission unit includes at least for sending transmission block TB, the TB to terminal device in the first Transmission Time Interval TTI Two encoding blocks CB, at least two CB include first part CB and second part CB；

Receiving unit, for sending second part CB to the terminal device in the 2nd TTI in the transmission unit and not sending out In the case of sending the first part CB, the first feedback information that the terminal device is sent is received in the 3rd TTI, described the One feedback information for feed back the terminal device whether the first part that correct decoding receives in the first TTI The CB and second part CB received in the 2nd TTI, wherein the 2nd TTI is located at after the first TTI Receiving time window in, the receiving time window is determined for the terminal device waits for the access network equipment described first The maximum time of the second part CB is sent after TTI.

43. access network equipment according to claim 42, which is characterized in that the receiving unit is additionally operable to receive the end The second feedback information that end equipment is sent in the 4th TTI, second feedback information are the terminal devices in the reception The access network equipment, second feedback information are sent in the case of not receiving the second part CB in time window For feed back the terminal device whether the TB that correct decoding is received in the first TTI, wherein the 4th TTI Identical as the 3rd TTI or described 4th TTI is located in time sequencing before the 3rd TTI.

44. the access network equipment according to claim 42 or 43, which is characterized in that the receiving unit is additionally operable to： The third feedback information that receiving terminal apparatus is sent in six TTI, the third feedback information are for feeding back the terminal device TB described in no correct decoding, and/or the second part CB that is received in the 5th TTI.